annotate src/SDL.c @ 1371:e2641c13bf33

Added a reminder on where to put libSDL.so
author Sam Lantinga <slouken@libsdl.org>
date Sat, 18 Feb 2006 07:21:42 +0000
parents 19418e4422cb
children d910939febfa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /* Initialization code for SDL */
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24
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25 #include "SDL.h"
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26 #include "SDL_fatal.h"
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27 #if !SDL_VIDEO_DISABLED
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28 #include "video/SDL_leaks.h"
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29 #endif
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30
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31 #if SDL_THREAD_PTH
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32 #include <pth.h>
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33 #endif
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34
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35 /* Initialization/Cleanup routines */
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36 #if !SDL_JOYSTICK_DISABLED
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37 extern int SDL_JoystickInit(void);
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38 extern void SDL_JoystickQuit(void);
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39 #endif
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40 #if !SDL_CDROM_DISABLED
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41 extern int SDL_CDROMInit(void);
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42 extern void SDL_CDROMQuit(void);
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43 #endif
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44 #if !SDL_TIMERS_DISABLED
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45 extern void SDL_StartTicks(void);
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46 extern int SDL_TimerInit(void);
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47 extern void SDL_TimerQuit(void);
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48 #endif
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49
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50 /* The current SDL version */
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51 static SDL_version version =
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52 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL };
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53
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54 /* The initialized subsystems */
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55 static Uint32 SDL_initialized = 0;
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56 static Uint32 ticks_started = 0;
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57
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58 #ifdef CHECK_LEAKS
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59 int surfaces_allocated = 0;
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60 #endif
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61
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62 int SDL_InitSubSystem(Uint32 flags)
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63 {
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64 #if !SDL_VIDEO_DISABLED
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65 /* Initialize the video/event subsystem */
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66 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) {
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67 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"),
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68 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) {
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69 return(-1);
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70 }
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71 SDL_initialized |= SDL_INIT_VIDEO;
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72 }
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73 #else
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74 if ( flags & SDL_INIT_VIDEO ) {
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75 SDL_SetError("SDL not built with video support");
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76 return(-1);
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77 }
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78 #endif
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79
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80 #if !SDL_AUDIO_DISABLED
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81 /* Initialize the audio subsystem */
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82 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) {
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83 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) {
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84 return(-1);
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85 }
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86 SDL_initialized |= SDL_INIT_AUDIO;
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87 }
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88 #else
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89 if ( flags & SDL_INIT_AUDIO ) {
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90 SDL_SetError("SDL not built with audio support");
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91 return(-1);
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92 }
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93 #endif
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94
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95 #if !SDL_TIMERS_DISABLED
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96 /* Initialize the timer subsystem */
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97 if ( ! ticks_started ) {
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98 SDL_StartTicks();
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99 ticks_started = 1;
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100 }
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101 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) {
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102 if ( SDL_TimerInit() < 0 ) {
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103 return(-1);
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104 }
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105 SDL_initialized |= SDL_INIT_TIMER;
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106 }
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107 #else
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108 if ( flags & SDL_INIT_TIMER ) {
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109 SDL_SetError("SDL not built with timer support");
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110 return(-1);
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111 }
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112 #endif
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113
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114 #if !SDL_JOYSTICK_DISABLED
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115 /* Initialize the joystick subsystem */
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116 if ( (flags & SDL_INIT_JOYSTICK) &&
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117 !(SDL_initialized & SDL_INIT_JOYSTICK) ) {
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118 if ( SDL_JoystickInit() < 0 ) {
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119 return(-1);
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120 }
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121 SDL_initialized |= SDL_INIT_JOYSTICK;
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122 }
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123 #else
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124 if ( flags & SDL_INIT_JOYSTICK ) {
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125 SDL_SetError("SDL not built with joystick support");
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126 return(-1);
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127 }
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128 #endif
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129
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130 #if !SDL_CDROM_DISABLED
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131 /* Initialize the CD-ROM subsystem */
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132 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) {
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133 if ( SDL_CDROMInit() < 0 ) {
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134 return(-1);
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135 }
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136 SDL_initialized |= SDL_INIT_CDROM;
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137 }
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138 #else
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139 if ( flags & SDL_INIT_CDROM ) {
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140 SDL_SetError("SDL not built with cdrom support");
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141 return(-1);
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142 }
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143 #endif
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144 return(0);
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145 }
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146
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147 int SDL_Init(Uint32 flags)
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148 {
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149 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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150 if (!pth_init()) {
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151 return -1;
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152 }
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153 #endif
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154
0
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155 /* Clear the error message */
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156 SDL_ClearError();
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157
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158 /* Initialize the desired subsystems */
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159 if ( SDL_InitSubSystem(flags) < 0 ) {
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160 return(-1);
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161 }
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162
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163 /* Everything is initialized */
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164 if ( !(flags & SDL_INIT_NOPARACHUTE) ) {
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165 SDL_InstallParachute();
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166 }
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167 return(0);
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168 }
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169
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170 void SDL_QuitSubSystem(Uint32 flags)
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171 {
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172 /* Shut down requested initialized subsystems */
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173 #if !SDL_CDROM_DISABLED
0
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174 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) {
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175 SDL_CDROMQuit();
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176 SDL_initialized &= ~SDL_INIT_CDROM;
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177 }
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178 #endif
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179 #if !SDL_JOYSTICK_DISABLED
0
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180 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) {
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181 SDL_JoystickQuit();
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182 SDL_initialized &= ~SDL_INIT_JOYSTICK;
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183 }
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184 #endif
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185 #if !SDL_TIMERS_DISABLED
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186 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) {
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187 SDL_TimerQuit();
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188 SDL_initialized &= ~SDL_INIT_TIMER;
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189 }
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190 #endif
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191 #if !SDL_AUDIO_DISABLED
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192 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) {
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193 SDL_AudioQuit();
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194 SDL_initialized &= ~SDL_INIT_AUDIO;
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195 }
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196 #endif
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197 #if !SDL_VIDEO_DISABLED
0
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198 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) {
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199 SDL_VideoQuit();
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200 SDL_initialized &= ~SDL_INIT_VIDEO;
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201 }
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202 #endif
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203 }
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204
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205 Uint32 SDL_WasInit(Uint32 flags)
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206 {
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207 if ( ! flags ) {
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208 flags = SDL_INIT_EVERYTHING;
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209 }
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210 return (SDL_initialized&flags);
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211 }
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212
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213 void SDL_Quit(void)
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214 {
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215 /* Quit all subsystems */
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216 #ifdef DEBUG_BUILD
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217 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout);
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218 #endif
0
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219 SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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220
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221 #ifdef CHECK_LEAKS
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222 #ifdef DEBUG_BUILD
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223 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout);
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224 #endif
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225
0
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226 /* Print the number of surfaces not freed */
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227 if ( surfaces_allocated != 0 ) {
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228 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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229 surfaces_allocated);
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230 }
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231 #endif
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232 #ifdef DEBUG_BUILD
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233 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout);
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234 #endif
0
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235
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236 /* Uninstall any parachute signal handlers */
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237 SDL_UninstallParachute();
397
283d348cb624 Pth threading bug fix
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parents: 297
diff changeset
238
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239 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
397
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diff changeset
240 pth_kill();
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diff changeset
241 #endif
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242 #ifdef DEBUG_BUILD
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243 printf("[SDL_Quit] : Returning!\n"); fflush(stdout);
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244 #endif
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245
0
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246 }
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247
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248 /* Return the library version number */
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249 const SDL_version * SDL_Linked_Version(void)
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250 {
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251 return(&version);
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252 }
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253
1330
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254 #if defined(__OS2__)
1190
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255 // Building for OS/2
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256 #ifdef __WATCOMC__
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257
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258 #define INCL_DOSERRORS
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259 #define INCL_DOSEXCEPTIONS
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260 #include <os2.h>
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261
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262 // Exception handler to prevent the Audio thread hanging, making a zombie process!
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263 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
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264 PEXCEPTIONREGISTRATIONRECORD pERegRec,
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265 PCONTEXTRECORD pCtxRec,
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266 PVOID p)
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267 {
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268 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND)
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269 return XCPT_CONTINUE_SEARCH;
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270 if (pERepRec->fHandlerFlags & EH_UNWINDING)
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271 return XCPT_CONTINUE_SEARCH;
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272 if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
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273 return XCPT_CONTINUE_SEARCH;
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274
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275 // Do cleanup at every fatal exception!
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276 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) &&
173c063d4f55 OS/2 port!
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277 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) &&
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278 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)
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279 )
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280 {
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281 if (SDL_initialized & SDL_INIT_AUDIO)
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282 {
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diff changeset
283 // This removes the zombie audio thread in case of emergency.
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diff changeset
284 #ifdef DEBUG_BUILD
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285 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n");
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286 #endif
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287 SDL_CloseAudio();
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288 }
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289 }
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290 return (XCPT_CONTINUE_SEARCH);
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291 }
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292
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293
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294 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler};
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295
173c063d4f55 OS/2 port!
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diff changeset
296 // The main DLL entry for DLL Initialization and Uninitialization:
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297 unsigned _System LibMain(unsigned hmod, unsigned termination)
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298 {
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diff changeset
299 if (termination)
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diff changeset
300 {
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diff changeset
301 #ifdef DEBUG_BUILD
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diff changeset
302 // printf("[SDL DLL Unintialization] : Removing exception handler\n");
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diff changeset
303 #endif
173c063d4f55 OS/2 port!
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304 DosUnsetExceptionHandler(&SDL_Main_xcpthand);
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305 return 1;
173c063d4f55 OS/2 port!
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diff changeset
306 } else
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diff changeset
307 {
173c063d4f55 OS/2 port!
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diff changeset
308 #ifdef DEBUG_BUILD
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diff changeset
309 // Make stdout and stderr unbuffered!
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diff changeset
310 setbuf(stdout, NULL);
173c063d4f55 OS/2 port!
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diff changeset
311 setbuf(stderr, NULL);
173c063d4f55 OS/2 port!
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diff changeset
312 #endif
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diff changeset
313 // Fire up exception handler
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diff changeset
314 #ifdef DEBUG_BUILD
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315 // printf("[SDL DLL Initialization] : Setting exception handler\n");
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316 #endif
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diff changeset
317 // Set exception handler
173c063d4f55 OS/2 port!
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diff changeset
318 DosSetExceptionHandler(&SDL_Main_xcpthand);
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diff changeset
319
173c063d4f55 OS/2 port!
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320 return 1;
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diff changeset
321 }
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diff changeset
322 }
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
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diff changeset
323 #endif /* __WATCOMC__ */
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 769
diff changeset
324
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
325 #elif defined(_WIN32)
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
326
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
327 #if !defined(HAVE_LIBC) || defined(_WIN32_WCE) || (defined(__WATCOMC__) && defined(BUILD_DLL))
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
328 /* Need to include DllMain() on Windows CE and Watcom C for some reason.. */
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
329 #include "SDL_windows.h"
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
331 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule,
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
332 DWORD ul_reason_for_call,
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
333 LPVOID lpReserved )
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
334 {
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
335 switch (ul_reason_for_call) {
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
336 case DLL_PROCESS_ATTACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
337 case DLL_THREAD_ATTACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
338 case DLL_THREAD_DETACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
339 case DLL_PROCESS_DETACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
340 break;
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
341 }
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
342 return TRUE;
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
343 }
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
344 #endif /* _WIN32_WCE and building DLL with Watcom C */
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
345
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
346 #endif /* OS/2 elif _WIN32 */